of detroit



Patented Mar. 13, 1923 UNITED STATES PATENT OFFICE.

MILTON TIBBETTS, OF DETROIT. MICHIGAN. ASSIGNOR TO PACKARD MOTOR CAR I COMPANY, OF DETROIT. MICHIGAN, A CORPORATION OF MICHIGAN,

HYDROCARBON MOTOR.

Application tiled October 23, 1919.

To all whom it may concern:

Be it known that I, Mmrox Tinners, a. citizen of the United States, and resident of Detroit` Wayne County. State of Michi- 5 gan. have invented certain new and useful Improvements in l-lydrocairbon Motors. of which the following is a specification.

This invention relates to hydrocarbon inotors and particularly to heater devices therel for.

In hydrocarbon motors, particularly as used on automobiles, heater devices have been designed for heating the mixture passing through the motor intake pipe. In one i form of such heater a combustion chamber is arranged in heating relation to the motor intake pipe and is supplied with a combustible mixture from an auxiliary carburetor. There is an outlet from the combustion 2o chamber to the intake pipe so that the suction of the` motor draws the charge into the combustion chamber. A spark isereat-4 ed in-the combustion chamber to fire the charge 'and the bumt ypass into the nas take header. The hea er isheated through itsl vitally' and the. mixture -thereinis heated byfgc'qntaetfwith the liotlibrurnt gases.

Idfdevi Vsuch as'thejaboveno provision has heretofore been made `for heating. such eagosedto freezing. For instance1 it is freqiently found that water in the gasoline collects in the lower parts of th'e carburetor and .freezes there when the motor is standing'idle in cold weather. A. Under these circumstances no ainountof heat appliedv to the lintakepi e above .the carburetor would thaw out tienmain .carburetor some distance belowv it and if the water has collected and frozen in the oat chamber inlet onl Aa.v small amount of gasoline will be available for the combustionlheater.

It Vis one of the ob'ects'of this invention,

therefore, to' provi e.l auxiliary heating means for the motor carburetor which shall be supplied with a heatingmedium from a combustion heater device- Y.

-Another object ofthe invention is to pro. vide an auxiliary heater for any desired so purpose, which heater is supplied with a water will collect in this low part of the 100 "/partsjof the motor carburetorfas may be' Serial No. 332,706.

heating medium from :i minibus-tion heater device of ,the type above referred to.

Another object. of the invention is to pro vide heating moans for the lower part or fuel Well of :i motor rni'lluielor. the lientin;r medium for which muy liv supplied by a combustion heater dci-irc of the type above referred to.

Another objet-t of the invention is to provide a combustion heater device with two outlet conduits either of which may' be connected with the device :1nd both of which discharge into the motor intake header;

Other objects of the invention will appear from the following description taken in connection with th'e drawings which form :i part of vthis specification and in which Figure l is a sectional vieni and part elevation of a motor carburetor and intake pipe embodying the invention; and

Figure 2 is a section on the lim' 2 2 of Fifrure 1.

eferringto the drawings, l0 represents' the intake ipe or header of n hydrocarbon 4 motor an '11 is a ,carburetor connected theretolfas by the bolts 12 and having its ichj'lfi's 'aeontinuatio'n' of the interior of the motor intake pi e l0. In this intake ronduit/formed by t e passage 13 and the' interirfof the intake ipe 10 is a throttle valve 14 which is usuallv manually operated to control the-speed of the motor.

The carburetor 11 comprises iu general ainin air inlet l5, au auxiliary nir inlet .16, mixture tube 17, a 4gasoline nozzle 18, Landia float chamber t9, the float chamberhya passage 20 and a well 2l which is dilei-.tlv beneaththe lower ond of the fuel .nozzlel8. The float chamber 19 is supplied with liquid fuel, such as gasoline, by a pipe 22 and the [lont in the chamber I9 controls the su ply in a well known manner.

Ifnet e` form of carburetor shown, which is. the,.well known Packard carburetor, the well 21 is one of the low points containing -the liquid fuel and with some of the gasoline now in use itis frequently found that lullrlprg-part in the fornrof a passage/13 i w communicating with the gasoline nozzle 18- 4i-:irliurvtor :iiiil iii ivi' \l iiiilil tiviitlivi it ii'ill heilt', from thv huruiiirvr ol' thv iiii\iui'v istrzinsferrvil through thv wailt\l of thv iiitiikv pipe l() to thv iiiixtuijv thvrviii p1i5 iiij`r tu the motor, 'l`liv hiiriit 5mm :ilm piiss through thv pipv lti iiito thv iiitiiliv pipv ttl and iiiix willi thv iiiixturv :iud thvrvhiA fui'- ther limit it. For tliv piirposv oll viiri'i'intr htlt. im :mmv iitlivl' pzli't nl' thv uiiitoi' or viii'l :in auxiliary hvaitvil iiiiiy hv voiiiivvtvd to thv outlet of thv voiiihiixtiou vliziiiilivi 2l :iiiil :irruiigt'd hvtwvvu .-iiiil vliiiiiilivr .-iiiil thv iiiotor intukv pipe. (hiv I'iii'iii of l iivli iiiixiliiir)r Iivntiir is shown hvrviii :iiiil voiiipi'isiw :i Vvoil or livi'iter 34 wliivh. i|i-lliv pri-wut iiistziiivv. is shown iis ii'rzippvil :ii-ouml thv wvll l if thc motor vzirliiirvtiir so that thv lit-ii( Iriiiii this coil ninil hv voiiivhvvd ilirv'vtlv to thv (':isti'ng foriiiing tliv lowvr part of thv vzirhurt-tor. 'lhv livntvi' I'. is :iipplivil l'i'iiiii :i pipv 35 coiiuvvtvd with thv riiivv il :iiiil thv iiiitlvtY l'roiii thv. liviitvr vxtviids iii thv foriu of :i pipi,` it'i to :i point. :i7 whvrv it vuiptics iiito thc iiitiikc pipil l0 :ilioi'v thv throlllv` I4. B v turiiiiitr thv lwitvh \:il\'v il to thv position shown iii the diiiw'iirLr tht` port 20 mit)l hv placed iii voiiiiiiiuiitzitiou with thv. pip" 35 :uid thv. motor Siittioii will thi-ii itoriiinuiiitziitv with thv vouihustioii vliziiiilivr 2t through thv pipv it'i, livzitvr 3H iiiiil pipv :t5 s0 that the produvt` of vouihustiou l'roiii thvl combustion chumhur 24 will piiss through the hesiter 34 before thv i'vnvli thv iiitnke pi l0. i

groin the above it will Iii; svvii lhiit should tlivi'v hv n voller-,tion of wiitvr in the well 2l or iii uur otlivi' lo\\ pzirt of thv viirhurctoi'` whii'li wiitvr hn tro/vii ziiiil toppiril thv l'uiivtioiiiii;r if thv i'xii'hiiivtol` thv \'i1l\v 3'2 iiiiij.' liv tiirrivd \|iiwii iiivl iipliii vriiiil iii, r thv iiiotiir ii.L4 hy :iii vlvvtriv zitting motor` or othvrii'isv. thv viiiiihiutioii hviitvr 23 will opt-mtv. iiiiil hot hiuuvil giisvs will pass from thv f'rinihit ioii vliiiuihvr t through the livitvr Iii :iliil thii\ tliiiii uit thv izirliiii'vtor. lh-iiiiuv otthv Intuition ot4 thv liviitvi' itl :it zi low poiiit otl thv vaii'liiirvtoi' the jvzitt-r will tviiil to tliziw iiiil :iur purl ol thv l'ziiliiii'vtor th:it ui.i hv trom-ii :ilww thiit poiii It will liv iiiidviwloml thiit otlivr ilsvs muy liv iiiziilv of thv :iii\iliaii'\ liviitvi' livi'v shown :iiiil lli-evi ihvilA aiuil \1iiiiiuiiioililirfzitiuiii iiizii liv iiiziilv iiitliiiiit departing from the -pirit ui' svopv of thc invention.

l. lii ii h iilixmii'lioii iiifitoi. thv voiiihiuiii limi with thi` viii'liurvtor :iiiil iutzilt'v. pipe thvi-vol", :uid :i tlirot'tlv vnlrv. of ii combus Limi liviitvi' ilvi'ivv. :iri'iiiigeil iii flirt-vt heating rvhitiiiii with mid iutiikv pipil iiliorv thv car hurt-tor. :iiiil :i liviitiii; r ronduit tending from iid lviivv to thv lowvr pairt of the cur liiirvtor :iuil haringr itzl outlet. vonriertvd with `ziiil iiitiikv pipv :ilioi'v siiil throttlev i'zilve.

2. lii :i h iih-oviii-lioii motor, the combinatioii with thv -iirliiirctor and intake pipe thvrviil'. :iiiil :i tlirottlv riilrv. of :i voniliustioii hvzitvi` ilvrivv nirzingvd iii heatingy relatioii to said iiitiiliv pipe. :ind :i vondiiit lending; from mid ilviivv to :i portion of tho Carhiirvtor voiitiiiiiiug thv liquid fuel :ind hawiiihr itx outlet voriiivvteil to thv intake pipe :ihorv thv tliiotth vulve.

2l. lii :i h rdroviurlioii motor` the combina.- toii with thi` iiitiikv pipitliei'eof. of incomliiistioii hviitvr iirriiiigvd in limiting relation to :iiid ppv. two independentf'onduits lendiiigfi'oiii siiiil voiiiliii'stioii liviiterto said i:itiiltv pipv` :uid ii vulve 'iii-ranged tolvonnevt vitlivr of siiid conduits with siiid heater.

4. Iii ii livdrovzirlioii motor, the combina.- tiriii with thv intake pipe thereof, of a coinliiistioii li'viitvr rlv-iivv arranged' in heating rvliitioii thvi-mi'ith, und :i secondary heater miuivvtvd with the outlet, from said combustion liviitvr device. said secondary heater disvliiirgiugiito the motor intake pipe.

."i. Tn it Vh vdroviirlion motor` t-he combination willi the iiitiilie pipo thereof, of fi comliiistioii livntvr device arranged in heating i'vliition therewith, ii serondrv heater coniivvtvd with thel outlet from said combustion limiter dvi-ivo, said secondary heater disvhiirging into the motor intake pi :ind n. hypiiimv from said hesiter device directly to -nid intake pipe. i

ti. Iii a hydroviirlion motor` the ombinaltion with the carburetor having a float chimilm'. and the motor' intake pipo, of a mlnmhiun heater leri1 :L limiting vunduit ieadilw from said devine to the iowvr part uf Snif eiu'burgtor and having its outlet mnnncted to said intake pipe. und means connected to said fioai chamber for Supplying mixture tu Suid heater device.

7. In a hydrocarbon motor, the combination with tiie motor intake vpipe, of a carburvtur connfui to Supply mixture Hinwtn, n mnilmstian heater for the mi-Xurc and having: a part in heating; rvhitinn in ille lnwm part of Said carburetor, und nimma separate from the main carburetor for anni plvingmixture to said heater.

n testimony whereof I aiix my signature.

MILTQN TIBBEITS. 

